Here’s another quick story to remind you all that the amount of personal information you choose to disclose on social networks, and the internet in general, can have threatening consequences.

A teenage girl in Australia posted images on Facebook of herself with a “large sum of cash“ that she had helped count at her grandmother’s house in Sydney. Within hours two robbers, armed with a knife and a club, descended upon the girl’s mother’s house in the town on Bundanoon - some 120km south-west of Sydney.

Despite telling the intruders that her daughter no longer lived there, the masked men took a small amount of cash and some personal objects before leaving the property. It is not understood precisely how the thieves obtained the family address, especially considering that the Facebook photo of the money was actually taken at the grandmother’s Sydney house.

Police in the area have issued a warning over the dangers that posting sensitive and personal information online can bring. While Facebook is brilliant for so many different things, there is always the risk that the wrong privacy settings can mean something intended to be shared with a closed group of people can end up being on display for the whole world to see. Studies have also shown how criminals use social media to plan burglaries in the UK.

If you have something to share that might attract unwanted attention or potentially put anyone in danger, you’re better off using a private sharing network. After all, sometimes it’s best to share with your own world, not the whole world.